yeah i figured. I noticed with my PSP for example, that although my card was an 8G Pro Duo, the longer I used the card, and the more frequently, the more sluggish it became, until eventually music would literally "skip" in mp3 form, or just not play, and when i would run ISOs (yes I hacked my psp), the cutscene videos would take an hour to play though due to skipping... I also realized I never reformatted my microSD before putting it into my N810 which is a pretty big no no haha... 2 year old card, has seen heavy use, not reformatted.. all a recipe for the problem I'm having